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MARVIN l1'. WrLLIAMs, oF MILWAUKEE, WISCONSIN, AssiGNoR To HiMSELr ANDJOHN LUNDl Letters .Patent No. 80,581, dated August 4, 1868.

IMPRQVBD ,SGAFIOLDIN TO ALL WHOM ITQMAY CNCERN: Y

Be it knou'nf that I, MARVIN T. WILLIAMS, of the city and'county ofMilwaukee, `and State of Wisconsin, have invented a ewfzmd usefulImprovement iu Ladders and Sca'olding; andl' do hereby declare Vthat thefollowing is a full, elem', and exact description thereof, `which willenable those skilled in the crt to make and use the same, referencebeing had to the accompanying drawing, forming partof thisspecification, in which- Figure 1 is a perspective view of myimprot'ement whenused :is a scaffold. Figure 2,-a View ofthe ladder whenlextended its whole length. v

Figure 3, one of the locks which hold the parts of the ladder,in`positon when extended. Similar letters of reference in each of "thegui-es indicate corresponding parts. I The object of my invention is toconstruct a ladder, which, for all purposes for'whieh the com'mon ladderis used, shall be elicicnt, and also, hy joints, braces, and locks, soconstructed that it may be transformed into 4a. ,scaold quickly, and bestrong and handy. v y A, the side-pieces; B, rounds; C,connecting-strips; D,loeks or catches; E, springs, to keep the catchesjin place; F, rods, to hold the lower 'ends' of the scaffold fromspreading; G, scail`old-plank; H,hooks, to hold Vcatches D back. y

Operation.' The-scaffold being in the position shown in iig. 1, remorethe scaffold-pieni; G, unhook rods F; Athen pres; K the loxrer endsoutward; this will bring the upper-ends of the ,ladder together, whenthe catches D will enter the clots and `hold the ends firmly together.This-inches a'ladder as Shown hy lig. 2. To make u scaffold again,lpressi down the spring-end of catches D and hook over the end-hooks H,which will keep the projections of the@ catches'D out ofthe slotsinthejoint-euds lol' the ladder; then turn the outer ends down till theposition, g. 1, is obtained. Place the sc'aEold-plahk on :my of therounds, according to the height required; hook rods F in the eyes in thefoot of the scailold.- y

What' I claim as my invention, afnd desire to secure by Lettera Patenti,isi- The two short ladders A, pivotedto the'V bars C, having thespring-ctches l) arrznged to engage in the recesses Ainthe elds of bersA, all coristructed and arranged for use Substantially as herein shownmid described.

M. T; WILLIAMS.

,. Witnesses:

,3. B. Smm, W. E. WALnIs.

